Reliability, security & resilience · Core

Reliability

Also called: system reliability

ELI5

The system keeps working correctly.

Used in conversation

“Reliability is now the product team's top goal.”

Definition

The ability of a system to perform as intended consistently over time.

Here “Reliability” means: The ability of a system to perform as intended consistently over time.

Pitch context

You will see “Reliability” in product strategy decks, roadmaps, experiments and architecture reviews when the discussion reaches reliability, security & resilience.

Why it matters: In reliability, security & resilience, the scope can change what data may be used, who may access it and which controls are required.

Sources & evidence · 2

Direct term-level sources and supporting source families.

National Institute of Standards and Technology — Computer Security Resource Center GlossaryDirect source · primary · checked 2026-08-16
Scrum Guides — The Scrum Guide — official current versionSupporting source family · primary · checked 2026-08-16